Ford F150 Pickup. Instruction - part 1817

Fig. 14: Installing Auxiliary Transmission Fluid Cooler 
Courtesy of FORD MOTOR CO. 

2. If equipped, install a new in-line transmission fluid filter. 

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transmission Cooling - F150 Pickup

  

Fig. 15: Installing In-Line Transmission Fluid Filter 
Courtesy of FORD MOTOR CO. 

3. Position the air deflector and install the fasteners. 

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transmission Cooling - F150 Pickup

  

Fig. 16: Installing Air Deflector 
Courtesy of FORD MOTOR CO. 

4. Position the skid plate and install the bolts (4x4 vehicles). 

Fig. 17: Installing Skid Plate (4X4 Vehicles) 
Courtesy of FORD MOTOR CO. 

5. Lower the vehicle. 

Vehicles With 4R100 Transmission 

6. Fill the transmission with the specified type and quantity of transmission fluid. For additional 

information, refer to AUTOMATIC TRANSMISSION-4R100 - F150 PICKUP . 

CAUTION: Do not use any fluid approved for MERCON(R) V application. Using a 

fluid rated for MERCON(R) V can cause internal damage in MERCON
(R) only applications.

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transmission Cooling - F150 Pickup

  

Vehicles With 4R70W Transmission

7. Fill the transmission with the specified type and quantity of transmission fluid. For additional 

information, refer to AUTOMATIC TRANSMISSION-4R70W - F150 PICKUP . 

All Vehicles 

8. Check for leaks.  

9. If equipped with air suspension, reactivate the system by turning on the air suspension switch.  

COOLER BYPASS VALVE - 4R100 TRANSMISSION 

Material 

Fig. 18: Material Specification 
Courtesy of FORD MOTOR CO. 

Removal 

1. Put the vehicle in NEUTRAL and position on a hoist. For additional information, refer to JACKING & 

HOISTING .  

2. If not done previously, carry out the transmission fluid cooler flow test procedure. For additional 

information, refer to AUTOMATIC TRANSMISSION-4R100 - F150 PICKUP .  

3. Remove the fluid cooler tube from the front cooler line case fitting. 

WARNING:

The electrical power to the air suspension system must be shut off 
prior to hoisting, jacking or towing an air suspension vehicle. This 
can be accomplished by turning off the air suspension switch in the 
RH kick panel area. Failure to do so can result in unexpected 
inflation or deflation of the air springs, which can result in shifting of 
the vehicle during these operations.

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transmission Cooling - F150 Pickup